Pennsylvania Route 890 is an 9.00-mile-long (14.48 km) state highway located in Northumberland County, Pennsylvania. The southern terminus is at PA 225 in Zerbe Township. The northern terminus is at PA 61 in Upper Augusta Township. The route runs through rural areas as a two-lane road, passing through the community of Augustaville. PA 890 was designated in 1928 between Augustaville and U.S. Route 120 near Sunbury. The route was extended to PA 225 in Trevorton in 1941.

Northumberland County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 91,647. Its county seat is Sunbury. The county is part of the Central Pennsylvania region of the state.